select sht_0 center sht_0 select crest_2 color red wireframe 70 select sht_0 center sht_0 select Ser42, Ile58, Leu68, His22, met60, ala66, gln8, leu44, ala56, leu10, val46, trp54 color red wireframe 70 select ala24, ala70, gln73 color blue select sht_0 center sht_0 select Ser42, Ile58, Leu68, His22, met60, ala66, gln8, leu44, ala56, leu10, val46, trp54 color red wireframe 0 select ala24, ala70, gln73 color blue select crest_1, crest_3, crest_7, crest_5 wireframe 70 select not(crest_0, crest_1, crest_2, crest_3) backbone 0 wireframe 0 select sht_0 center sht_0 select crest_0, crest_1, crest_2, crest_3 wireframe 70 color yellow select crest_0, crest_2 color red select ala24, ala70, gln73 color blue select crest_0, crest_1, crest_2, crest_3 center crest_0, crest_1, crest_2, crest_3 calculate hbonds